Gasket-sealing composition



1 MY, it e sles seem e; drug;

3 0 313835 E". "VER'VQQHE, 013 LOS .lNG-ELEEI, CALIFORNIA, ASSCGNOR, OF $INE-H$LF IE8 LEE 1). MUJILTGN, 9 LOS ANGELES, CALIFDRBTIA.

its Brewing. Application filed, April 21,

To 0533 whom it may concern:

Be it known that 1, Jones 1 nevoomr, a citizen of the United St tes, residing at Les Angeles, in the county of Los Angeles and State-of California, have invented new and useful Improvements in Gesket- Sealing Compositions, of which the following is a. specification.

My invention relates to a sealing composition, especially suited. to he used with gaskets.

It is an object of this invention to proride an inexpensive and eflicient sealing composition, which is Water and oil proof,

- and adapted for sealing joints in. which paper, rubber or metal gaskets are used.

My invention consists in the composition hereinafter described and. claimed, and the process of making the same.

I take rosin and heat the same in a suitable vessel, gradually raising the tempera-- ture shove the melting point until the rosin begins to boil and foam. I keep the rosin boiling for a considerable time, stirring the same in order to prevent burning, until the WhOlG mess of rosin is of a very dark and almost black color. I now discontinue any furi'aher heating of the resin and. add henzoi thereto, stirring the mixture, then the henzol will quickly dissolve the rosin, forming therewith e composition which has the appearance and consistency of New Orleans molasses. The rosin and benzol being mixed in the proportion of 12 parts of rosin and 10 parts of henzol by weight.

The boiling of the resin up to the point Where the same turns black effects a chemical change in the rosin, the exact nature of :Epecification of Letters Patent.

Petentecifiune i, 392% 1919. semi No. 291,745.

which I cannot explain. However, it causes the resulting composition to form exti'emeiy adhesive substance which Wili adhere to 'Wood, paper, rubber, or metal, such as copper gaskets, and form. eseeling C0111 position Which is Water and oil proof. It is superior to the ordinary rubber compositions on the market for such purposes, as rubber compositions will not adhere properly to metal surfaces and ere easily rubbed off.

If the composition require-sthinning down, henzol may be added, or alcohol, either methyl or ethyl alcohol.

1 claim: I 1. A sealing composition for gaskets and the like, comprising rosin which has been subjected to heating until it has turned. e r

dark color, and e vole-tile solvent for the same.

2. A sealing composition for gaskets end the like comprising rosin which has been boiled until it has turned a color, and henzol 3. A sealing composition for gaskets and the like, containing rosin which has been coiled until it has turned a. dark color, and

henzol, in the proportion of 12 parts of rosin and 10 parts of; benzol.

e. A method oi making" a sealing composition for gaskets and the like, comprising heating rosin until its coils, continuing the boiling until itturns a. dark color, and dis solving the rosin in a solvent in the proportion of i2- perts of the resinous body to 16 parts of the solvent.

in testimony whereof I have signed my neune to this specification.

J. F. VE'EVGOR', 

